#ifndef FS_CEPH_IOCTL_H
#define FS_CEPH_IOCTL_H

#include <linux/ioctl.h>
#include <linux/types.h>

#define CEPH_IOCTL_MAGIC 0x97

/*
 * CEPH_IOC_GET_LAYOUT - get file layout or dir layout policy
 * CEPH_IOC_SET_LAYOUT - set file layout
 * CEPH_IOC_SET_LAYOUT_POLICY - set dir layout policy
 *
 * The file layout specifies how file data is striped over objects in
 * the distributed object store, which object pool they belong to (if
 * it differs from the default), and an optional 'preferred osd' to
 * store them on.
 *
 * Files get a new layout based on the policy set on the containing
 * directory or one of its ancestors.  The GET_LAYOUT ioctl will let
 * you examine the layout for a file or the policy on a directory.
 *
 * SET_LAYOUT will let you set a layout on a newly created file.  This
 * only works immediately after the file is created and before any
 * data is written to it.
 *
 * SET_LAYOUT_POLICY will let you set a layout policy (default layout)
 * on a directory that will apply to any new files created in that
 * directory (or any child directory that doesn't specify a layout of
 * its own).
 */

/* use u64 to align sanely on all archs */
struct ceph_ioctl_layout {
	__u64 stripe_unit, stripe_count, object_size;
	__u64 data_pool;

	/* obsolete.  new values ignored, always return -1 */
	__s64 preferred_osd;
};

#define CEPH_IOC_GET_LAYOUT _IOR(CEPH_IOCTL_MAGIC, 1,		\
				   struct ceph_ioctl_layout)
#define CEPH_IOC_SET_LAYOUT _IOW(CEPH_IOCTL_MAGIC, 2,		\
				   struct ceph_ioctl_layout)
#define CEPH_IOC_SET_LAYOUT_POLICY _IOW(CEPH_IOCTL_MAGIC, 5,	\
				   struct ceph_ioctl_layout)

/*
 * CEPH_IOC_GET_DATALOC - get location of file data in the cluster
 *
 * Extract identity, address of the OSD and object storing a given
 * file offset.
 */
struct ceph_ioctl_dataloc {
	__u64 file_offset;           /* in+out: file offset */
	__u64 object_offset;         /* out: offset in object */
	__u64 object_no;             /* out: object # */
	__u64 object_size;           /* out: object size */
	char object_name[64];        /* out: object name */
	__u64 block_offset;          /* out: offset in block */
	__u64 block_size;            /* out: block length */
	__s64 osd;                   /* out: osd # */
	struct sockaddr_storage osd_addr; /* out: osd address */
};

#define CEPH_IOC_GET_DATALOC _IOWR(CEPH_IOCTL_MAGIC, 3,	\
				   struct ceph_ioctl_dataloc)

/*
 * CEPH_IOC_LAZYIO - relax consistency
 *
 * Normally Ceph switches to synchronous IO when multiple clients have
 * the file open (and or more for write).  Reads and writes bypass the
 * page cache and go directly to the OSD.  Setting this flag on a file
 * descriptor will allow buffered IO for this file in cases where the
 * application knows it won't interfere with other nodes (or doesn't
 * care).
 */
#define CEPH_IOC_LAZYIO _IO(CEPH_IOCTL_MAGIC, 4)

/*
 * CEPH_IOC_SYNCIO - force synchronous IO
 *
 * This ioctl sets a file flag that forces the synchronous IO that
 * bypasses the page cache, even if it is not necessary.  This is
 * essentially the opposite behavior of IOC_LAZYIO.  This forces the
 * same read/write path as a file opened by multiple clients when one
 * or more of those clients is opened for write.
 *
 * Note that this type of sync IO takes a different path than a file
 * opened with O_SYNC/D_SYNC (writes hit the page cache and are
 * immediately flushed on page boundaries).  It is very similar to
 * O_DIRECT (writes bypass the page cache) excep that O_DIRECT writes
 * are not copied (user page must remain stable) and O_DIRECT writes
 * have alignment restrictions (on the buffer and file offset).
 */
#define CEPH_IOC_SYNCIO _IO(CEPH_IOCTL_MAGIC, 5)

#endif
'7'>7</option><option value='8'>8</option><option value='9'>9</option><option value='10'>10</option><option value='15'>15</option><option value='20'>20</option><option value='25'>25</option><option value='30'>30</option><option value='35'>35</option><option value='40'>40</option></select></td></tr><tr><td class='label'>space:</td><td class='ctrl'><select name='ignorews' onchange='this.form.submit();'><option value='0' selected='selected'>include</option><option value='1'>ignore</option></select></td></tr><tr><td class='label'>mode:</td><td class='ctrl'><select name='dt' onchange='this.form.submit();'><option value='0' selected='selected'>unified</option><option value='1'>ssdiff</option><option value='2'>stat only</option></select></td></tr><tr><td/><td class='ctrl'><noscript><input type='submit' value='reload'/></noscript></td></tr></table></form></div><table summary='commit info' class='commit-info'>
<tr><th>author</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-30 15:47:19 -0800</td></tr>
<tr><th>committer</th><td>Linus Torvalds &lt;torvalds@linux-foundation.org&gt;</td><td class='right'>2017-01-30 15:47:19 -0800</td></tr>
<tr><th>commit</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ax25/ax25_std_timer.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b</a> (<a href='/cgit.cgi/linux/net-next.git/patch/net/ax25/ax25_std_timer.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>patch</a>)</td></tr>
<tr><th>tree</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/tree/?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>4078d3ae27d4ebb85bdcd4d84e9b9a4d059f22bb</a> /<a href='/cgit.cgi/linux/net-next.git/tree/net/ax25/ax25_std_timer.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>net/ax25/ax25_std_timer.c</a></td></tr>
<tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ax25/ax25_std_timer.c?id=751321b3dd5040dc5be19bd23f985e80c914621a'>751321b3dd5040dc5be19bd23f985e80c914621a</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ax25/ax25_std_timer.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b&amp;id2=751321b3dd5040dc5be19bd23f985e80c914621a'>diff</a>)</td></tr><tr><th>parent</th><td colspan='2' class='oid'><a href='/cgit.cgi/linux/net-next.git/commit/net/ax25/ax25_std_timer.c?id=54791b276b4000b307339f269d3bf7db877d536f'>54791b276b4000b307339f269d3bf7db877d536f</a> (<a href='/cgit.cgi/linux/net-next.git/diff/net/ax25/ax25_std_timer.c?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b&amp;id2=54791b276b4000b307339f269d3bf7db877d536f'>diff</a>)</td></tr></table>
<div class='commit-subject'>Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc</div><div class='commit-msg'>Pull sparc fixes from David Miller:
 "Several small bug fixes and tidies, along with a fix for non-resumable
  memory errors triggered by userspace"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc64: Handle PIO &amp; MEM non-resumable errors.
  sparc64: Zero pages on allocation for mondo and error queues.
  sparc: Fixed typo in sstate.c. Replaced panicing with panicking
  sparc: use symbolic names for tsb indexing
</div><div class='diffstat-header'><a href='/cgit.cgi/linux/net-next.git/diff/?id=f9a42e0d58cf0fe3d902e63d4582f2ea4cd2bb8b'>Diffstat</a> (limited to 'net/ax25/ax25_std_timer.c')</div><table summary='diffstat' class='diffstat'>